a. Calculate the area of the entire figure

b. Calculate the area of the two black pieces

I'm horrible at these kinds of questions so help would be really appreciated <3

Guest Mar 27, 2018

#1**+1 **

The grey half circle on the left has a radius of 12cm

Its area is (1/2)pi(12)^2 = 72pi cm^2 ≈ 226.2 cm^2 (1)

The remaining area is a rectangle with dimensions 12 * 24 = 288 cm^2 (2)

So the approximate total area is 288 + 226.2 = 514.2 cm^2

The approximate area of the two black pieces is (2) - (1) = 61.8 cm^2

CPhill Mar 27, 2018